Revision 11

Date:
2007/07/20 16:07:46
Author:
dpavlin
Revision Log:
cleanup dir, generate different huffman tables
Files:

Legend:

 
Added
 
Removed
 
Modified

  • amv.pl

     
    22 22 my $path = shift @ARGV || die "usage: $0 movie.amv\n";
    23 23
    24 24 my $dump_dir = '/tmp/dump/';
    25 if ( ! -e $dump_dir ) {
    26 mkpath $dump_dir || die "can't create $dump_dir: $!";
    27 }
    25 rmtree $dump_dir if -e $dump_dir;
    26 mkpath $dump_dir || die "can't create $dump_dir: $!";
    28 27
    29 28 open(my $fh, '<', $path) || die "can't open $path: $!";
    30 29
    … …  
    164 163 0,0, # X,Y thumbnail
    165 164 ).
    166 165 #------------------------------------------------------------------
    167 "\xFF\xDB". # Define Quantization table marker
    168 "\x00\x43". # len
    169 "\x00". # the precision and the quantization table index
    170 "\x00" x 64 .
    171 #------------------------------------------------------------------
    172 "\xFF\xC0". # Start of frame
    166 "\xFF\xC0". # Start of frame
    173 167 pack("ncnncc9",
    174 168 17, # len
    175 169 8, # sample precision in bits
    176 170 120,160, # X,Y size
    177 171 3, # number of components
    178 1,0x22,0, # Component ID, H+V sampling factors, Quantization table number
    179 2,0x11,0,
    180 3,0x11,0,
    172 1,0x21,0, # Component ID, H+V sampling factors, Quantization table number
    173 2,0x11,1,
    174 3,0x11,1,
    181 175 ).
    182 176 #------------------------------------------------------------------
    177 "\xFF\xDB". # Define Quantization table marker
    178 "\x00\x84". # len
    179 "\x00". # 8 bit values, (byte) table 0
    180 "\x10\x0B\x0C\x0E\x0C".
    181 "\x0A\x10\x0E\x0D\x0E".
    182 "\x12\x11\x10\x13\x18".
    183 "\x28\x1A\x18\x16\x16".
    184 "\x18\x31\x23\x25\x1D".
    185 "\x28\x3A\x33\x3D\x3C".
    186 "\x39\x33\x38\x37\x40".
    187 "\x48\x5C\x4E\x40\x44".
    188 "\x57\x45\x37\x38\x50".
    189 "\x6D\x51\x57\x5F\x62".
    190 "\x67\x68\x67\x3E\x4D".
    191 "\x71\x79\x70\x64\x78".
    192 "\x5C\x65\x67\x63".
    193 "\x01". # 8 bit values, (byte) table 1
    194 "\x11\x12\x12\x18\x15".
    195 "\x18\x2F\x1A\x1A\x2F".
    196 "\x63\x42\x38\x42\x63".
    197 "\x63\x63\x63\x63\x63".
    198 "\x63\x63\x63\x63\x63".
    199 "\x63\x63\x63\x63\x63".
    200 "\x63\x63\x63\x63\x63".
    201 "\x63\x63\x63\x63\x63".
    202 "\x63\x63\x63\x63\x63".
    203 "\x63\x63\x63\x63\x63".
    204 "\x63\x63\x63\x63\x63".
    205 "\x63\x63\x63\x63\x63".
    206 "\x63\x63\x63\x63".
    207 #------------------------------------------------------------------
    183 208 # huffman("\x00"). # 0 DC
    184 huffman("\x01"). # 1 DC
    209 # huffman("\x01"). # 1 DC
    185 210 # huffman("\x10"). # 0 AC
    186 211 # huffman("\x11"). # 1 AC
    187 212 #------------------------------------------------------------------
    213 # Define huffman table (section B.2.4.1)
    214 "\xFF\xC4". # Marker
    215 "\x00\x1F". # Length (31 bytes)
    216 "\x00". # DC, (byte) table 0
    217 "\x00\x01\x05\x01\x01".
    218 "\x01\x01\x01\x01\x00".
    219 "\x00\x00\x00\x00\x00".
    220 "\x00\x00\x01\x02\x03".
    221 "\x04\x05\x06\x07\x08".
    222 "\x09\x0A\x0B".
    223 # Define huffman table (section B.2.4.1)
    224 "\xFF\xC4". # Marker
    225 "\x00\xB5". # Length (181 bytes)
    226 "\x10". # AC, (byte) table 0
    227 "\x00\x02\x01\x03\x03".
    228 "\x02\x04\x03\x05\x05".
    229 "\x04\x04\x00\x00\x01".
    230 "\x7D\x01\x02\x03\x00".
    231 "\x04\x11\x05\x12\x21".
    232 "\x31\x41\x06\x13\x51".
    233 "\x61\x07\x22\x71\x14".
    234 "\x32\x81\x91\xA1\x08".
    235 "\x23\x42\xB1\xC1\x15".
    236 "\x52\xD1\xF0\x24\x33".
    237 "\x62\x72\x82\x09\x0A".
    238 "\x16\x17\x18\x19\x1A".
    239 "\x25\x26\x27\x28\x29".
    240 "\x2A\x34\x35\x36\x37".
    241 "\x38\x39\x3A\x43\x44".
    242 "\x45\x46\x47\x48\x49".
    243 "\x4A\x53\x54\x55\x56".
    244 "\x57\x58\x59\x5A\x63".
    245 "\x64\x65\x66\x67\x68".
    246 "\x69\x6A\x73\x74\x75".
    247 "\x76\x77\x78\x79\x7A".
    248 "\x83\x84\x85\x86\x87".
    249 "\x88\x89\x8A\x92\x93".
    250 "\x94\x95\x96\x97\x98".
    251 "\x99\x9A\xA2\xA3\xA4".
    252 "\xA5\xA6\xA7\xA8\xA9".
    253 "\xAA\xB2\xB3\xB4\xB5".
    254 "\xB6\xB7\xB8\xB9\xBA".
    255 "\xC2\xC3\xC4\xC5\xC6".
    256 "\xC7\xC8\xC9\xCA\xD2".
    257 "\xD3\xD4\xD5\xD6\xD7".
    258 "\xD8\xD9\xDA\xE1\xE2".
    259 "\xE3\xE4\xE5\xE6\xE7".
    260 "\xE8\xE9\xEA\xF1\xF2".
    261 "\xF3\xF4\xF5\xF6\xF7".
    262 "\xF8\xF9\xFA".
    263 # Define huffman table (section B.2.4.1)
    264 "\xFF\xC4". # Marker
    265 "\x00\x1F". # Length (31 bytes)
    266 "\x01". # DC, (byte) table 1
    267 "\x00\x03\x01\x01\x01".
    268 "\x01\x01\x01\x01\x01".
    269 "\x01\x00\x00\x00\x00".
    270 "\x00\x00\x01\x02\x03".
    271 "\x04\x05\x06\x07\x08".
    272 "\x09\x0A\x0B".
    273 # Define huffman table (section B.2.4.1)
    274 "\xFF\xC4". # Marker
    275 "\x00\xB5". # Length (181 bytes)
    276 "\x11". # AC, (byte) table 1
    277 "\x00\x02\x01\x02\x04".
    278 "\x04\x03\x04\x07\x05".
    279 "\x04\x04\x00\x01\x02".
    280 "\x77\x00\x01\x02\x03".
    281 "\x11\x04\x05\x21\x31".
    282 "\x06\x12\x41\x51\x07".
    283 "\x61\x71\x13\x22\x32".
    284 "\x81\x08\x14\x42\x91".
    285 "\xA1\xB1\xC1\x09\x23".
    286 "\x33\x52\xF0\x15\x62".
    287 "\x72\xD1\x0A\x16\x24".
    288 "\x34\xE1\x25\xF1\x17".
    289 "\x18\x19\x1A\x26\x27".
    290 "\x28\x29\x2A\x35\x36".
    291 "\x37\x38\x39\x3A\x43".
    292 "\x44\x45\x46\x47\x48".
    293 "\x49\x4A\x53\x54\x55".
    294 "\x56\x57\x58\x59\x5A".
    295 "\x63\x64\x65\x66\x67".
    296 "\x68\x69\x6A\x73\x74".
    297 "\x75\x76\x77\x78\x79".
    298 "\x7A\x82\x83\x84\x85".
    299 "\x86\x87\x88\x89\x8A".
    300 "\x92\x93\x94\x95\x96".
    301 "\x97\x98\x99\x9A\xA2".
    302 "\xA3\xA4\xA5\xA6\xA7".
    303 "\xA8\xA9\xAA\xB2\xB3".
    304 "\xB4\xB5\xB6\xB7\xB8".
    305 "\xB9\xBA\xC2\xC3\xC4".
    306 "\xC5\xC6\xC7\xC8\xC9".
    307 "\xCA\xD2\xD3\xD4\xD5".
    308 "\xD6\xD7\xD8\xD9\xDA".
    309 "\xE2\xE3\xE4\xE5\xE6".
    310 "\xE7\xE8\xE9\xEA\xF2".
    311 "\xF3\xF4\xF5\xF6\xF7".
    312 "\xF8\xF9\xFA".
    313 #------------------------------------------------------------------
    188 314 "\xFF\xDA". # Start of Scan marker
    189 315 pack("nC11",
    190 316 12, # length
    191 317 3, # number of components
    192 1,0, # components DC+AC table numbers
    193 2,17,
    194 3,17,
    195 0,63, # Ss, Se
    196 0,165, # Ah, Ai
    318 1,0x00, # Scan 1: use DC/AC huff tables 0/0
    319 2,0x11, # Scan 2: use DC/AC huff tables 1/1
    320 3,0x11, # Scan 3: use DC/AC huff tables 1/1
    321 0,0x3f, # Ss, Se
    322 0, # Ah, Ai (not used)
    197 323 );
    198 324 #------------------------------------------------------------------
    199 325
    200 326
    201 warn "## created JPEG header...", dump( $header );
    202 hex_dump( $header, 0 );
    327 if ( $dump ) {
    328 warn "## created JPEG header...\n";
    329 hex_dump( $header, 0 );
    330 }
    203 331
    204 print $fh $header . $data || die "can't write frame into $path: $!";
    332 print $fh $header || die "can't write header into $path: $!";
    333 print $fh $data || die "can't write frame into $path: $!";
    205 334 close $fh || die "can't close $path: $!";
    206 335 print ">> created $path ", -s $path, " bytes\n";
    207 336 }